Stovepipe-joint lock.



'J. A. MEYIERS. STOVEPIPE JOINT LOCK.

APPLICATION FILED APR- 12, 19I6.

1,217,805. 7 Patented Feb. 27, 1917.

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sTovEP PE-JOINT 100K.

Specification ofLe'ttersIfatent. Patented Feb; 27 1917,

7 Application filed April 1 2, 1915. Serial No. 90,625;

To all whom it may concern:

Be it known that 1, JOHN A. MEYERS, a citizen of the United States,residing at Forestell, in the county of St. Charles and State ofMissouri, have invented certain:

thereof." The lugs are formed by stamping new and usefulImprovements inStovepipe} Joint Locks; and I do hereby declare the following to be afull, clear, and exact de scription of the invention, such as willenable others skilled in the art to which it appertains to make and usethe same.

This invention relates to new and useful improvements in a stove pipejoint lock and one of its objects is the provision of a device of thischaracter, which shall be simple, durable and efiicient, and which maybe manufactured and sold at a comparatively low cost.

Another object of this inventionis to provide oppositely disposed lugsupon the interior of one section of the stove pipe and adapted to bereceived in looking grooves formed in the other section and said groovesbeing so constructed that the lugs will be held against accidentalwithdrawal, preventing the sections of the stove pipe from parting.

A further object of this invention is to provide the grooves with adownwardly inclined branch, to cause the sections to be drawn in thedirection of each other, when one section is rotated causing the lugs totravel in the inclined branches of the grooves, thus drawing thesections together.

lNith these and other objects in view as will become more apparent asthe description proceeds, the invention consists in certain novelfeatures of construction, combination and arrangement of parts as willbe hereinafter more fully described and claimed.

Fo a complete understanding of my invention, reference is to be had tothe follow? ing description'and accompanying drawing, in which Figure 1is a side elevation of a stove pipe joint lock, constructed inaccordance with my invention,

Fig. 2 is a longitudinal sectional view, taken on the line 22 of Fig. 1,illustrating the lugs held within the grooves against accidentaldisplacement, and

Fig. 3 is a fragmentary vertical sectional view taken on the line 3-3 ofFig.1.

Referring'in detail to'the drawing, the. numerals 1 and 2 indicate thesections of a stovepipe. Each of the sections are provided withoppositely disposed squared lugs 3 upon the interior and adjacent oneend them out from the sections with any suitable blunt instrument.

The other end. of the sections 1 and 2 is provided with groovesconsisting of relatively off set inner and outer vertical branches a and5 and an inclined branch 6- extending downwardly from the lower end ofthe outer branch 4 to the upper end of the innerbranch 5 and ahorizontal locking branch 7 extending from the lower end of the innerbranch 5 in the direction of the lower end of the outer branch 4. Thelock-- ing branch 7 is provided within its inner wall with an off setportion to form a socket 8 for receiving and holding the lug 3when thesections 1 and 2 areina locked position.

In looking the sections 1 and 2 together,

' opposite direction from the first direction of rotation, the lugs willtravel in the locking branches 7 into the sockets 8 and be held againstaccidental withdrawal.

While I have shown and described the preferred embodiment of myinvention, it will be understood that minor changes in construction,combination and arrangement of parts may be made without departing fromthe spirit and scope. of the invention as claimed. 1

Having thus described my invention, what I claim is In a device of thecharacter described consisting of telescopic stove pipe sections, a pairof lugs formed onone end of each of said sections, the other end of'saidsections being provided. with oppositely disposed locking grooves, eachof said grooves consisting of relatively ofi' set inner and outervertical branches, and an inclined branch extending downwardly from thelower end of the outer branch to the upper end of the the lugs 3 arepushed downwardly in the I inner branch and a horizontal locking Intestimony whereof I. afiix my signabranch extending from the lower endof ture in presence of two Witnesses. the inner branch in the directionof the JOHN A. MEYERS.

outer branch and provided With a socket in Witnesses: the bottom Wallthereof to hold the lugs GEO. N. RIEMEIER, against accidentalWithdrawal. G. C. FRIDLEY.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

